Short communication: The effect of substituting fish oil in dairy cow diets with docosahexaenoic acid-micro algae on milk composition and fatty acids profile

The effects of substituting fish oil (FO) with docosahexaenoic acid (DHA)-micro algae on milk chemical and fatty acid composition were examined in this study. Twenty-four Holstein cows in mid lactation grazing on an alfalfa-grass based pasture were divided into 4 treatment groups (6 cows/treatment)...

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Veröffentlicht in:Journal of dairy science 2009-12, Vol.92 (12), p.6156-6159
Hauptverfasser: AbuGhazaleh, A.A., Potu, R.B., Ibrahim, S.
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container_title Journal of dairy science
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creator AbuGhazaleh, A.A.
Potu, R.B.
Ibrahim, S.
description The effects of substituting fish oil (FO) with docosahexaenoic acid (DHA)-micro algae on milk chemical and fatty acid composition were examined in this study. Twenty-four Holstein cows in mid lactation grazing on an alfalfa-grass based pasture were divided into 4 treatment groups (6 cows/treatment) and supplemented with 7 kg/d grain mix plus 350g of soybean oil and one of the following: 1) 150g of FO, 2) 100g of FO plus 50g of algae, 3) 50g of FO plus 100g of algae, or 4) 150g of algae. Cows were fed treatment diets for 3 wk, and milk samples were collected from each cow during the last 3 d of the study. Milk production (17.96, 17.56, 17.55, and 19.26 kg/d for treatment diets 1 to 4, respectively), milk fat percentages (3.17, 3.49, 3.74, and 3.43%), and milk protein percentages (3.35, 3.50, 3.71, and 3.42%) were similar between treatment diets. Concentrations (g/100g of fatty acids) of milk cis-9 trans-11 (c9t11) conjugated linoleic acid (CLA; 3.41, 3.69, 4.47, and 4.21 for treatment diets 1 to 4, respectively) and vaccenic acid (11.80, 12.83, 13.87, and 13.53) were similar between treatment diets. Results of this study suggest that DHA-micro algae can partially or fully substitute FO in a cow's diet without any adverse effects on milk production, milk composition, or milk c9t11 CLA content. The DHA-micro algae may be used as a viable alternative for FO in cow's diet to modify rumen biohydrogenation to increase milk c9t11 CLA content.
doi_str_mv 10.3168/jds.2009-2400
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Feeding behavior ; Female ; fish oil ; Fish Oils ; Fundamental and applied biological sciences. 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Twenty-four Holstein cows in mid lactation grazing on an alfalfa-grass based pasture were divided into 4 treatment groups (6 cows/treatment) and supplemented with 7 kg/d grain mix plus 350g of soybean oil and one of the following: 1) 150g of FO, 2) 100g of FO plus 50g of algae, 3) 50g of FO plus 100g of algae, or 4) 150g of algae. Cows were fed treatment diets for 3 wk, and milk samples were collected from each cow during the last 3 d of the study. Milk production (17.96, 17.56, 17.55, and 19.26 kg/d for treatment diets 1 to 4, respectively), milk fat percentages (3.17, 3.49, 3.74, and 3.43%), and milk protein percentages (3.35, 3.50, 3.71, and 3.42%) were similar between treatment diets. Concentrations (g/100g of fatty acids) of milk cis-9 trans-11 (c9t11) conjugated linoleic acid (CLA; 3.41, 3.69, 4.47, and 4.21 for treatment diets 1 to 4, respectively) and vaccenic acid (11.80, 12.83, 13.87, and 13.53) were similar between treatment diets. Results of this study suggest that DHA-micro algae can partially or fully substitute FO in a cow's diet without any adverse effects on milk production, milk composition, or milk c9t11 CLA content. The DHA-micro algae may be used as a viable alternative for FO in cow's diet to modify rumen biohydrogenation to increase milk c9t11 CLA content.</description><subject>Animal productions</subject><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Body Constitution - physiology</subject><subject>Body Weight - physiology</subject><subject>Cattle - physiology</subject><subject>cis-9 trans-11 conjugated linoleic acid</subject><subject>cow feeding</subject><subject>dairy cows</subject><subject>Dairying</subject><subject>Diet - veterinary</subject><subject>dietary fat</subject><subject>Dietary Fats - administration &amp; dosage</subject><subject>dietary supplements</subject><subject>docosahexaenoic acid</subject><subject>Docosahexaenoic Acids - administration &amp; dosage</subject><subject>Eukaryota</subject><subject>fatty acid composition</subject><subject>Fatty Acids - analysis</subject><subject>Fatty Acids - chemistry</subject><subject>Feeding. 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Twenty-four Holstein cows in mid lactation grazing on an alfalfa-grass based pasture were divided into 4 treatment groups (6 cows/treatment) and supplemented with 7 kg/d grain mix plus 350g of soybean oil and one of the following: 1) 150g of FO, 2) 100g of FO plus 50g of algae, 3) 50g of FO plus 100g of algae, or 4) 150g of algae. Cows were fed treatment diets for 3 wk, and milk samples were collected from each cow during the last 3 d of the study. Milk production (17.96, 17.56, 17.55, and 19.26 kg/d for treatment diets 1 to 4, respectively), milk fat percentages (3.17, 3.49, 3.74, and 3.43%), and milk protein percentages (3.35, 3.50, 3.71, and 3.42%) were similar between treatment diets. Concentrations (g/100g of fatty acids) of milk cis-9 trans-11 (c9t11) conjugated linoleic acid (CLA; 3.41, 3.69, 4.47, and 4.21 for treatment diets 1 to 4, respectively) and vaccenic acid (11.80, 12.83, 13.87, and 13.53) were similar between treatment diets. Results of this study suggest that DHA-micro algae can partially or fully substitute FO in a cow's diet without any adverse effects on milk production, milk composition, or milk c9t11 CLA content. The DHA-micro algae may be used as a viable alternative for FO in cow's diet to modify rumen biohydrogenation to increase milk c9t11 CLA content.</abstract><cop>New York, NY</cop><pub>Elsevier Inc</pub><pmid>19923618</pmid><doi>10.3168/jds.2009-2400</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record>
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source MEDLINE; Elsevier ScienceDirect Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals
subjects Animal productions
Animals
Biological and medical sciences
Body Constitution - physiology
Body Weight - physiology
Cattle - physiology
cis-9 trans-11 conjugated linoleic acid
cow feeding
dairy cows
Dairying
Diet - veterinary
dietary fat
Dietary Fats - administration & dosage
dietary supplements
docosahexaenoic acid
Docosahexaenoic Acids - administration & dosage
Eukaryota
fatty acid composition
Fatty Acids - analysis
Fatty Acids - chemistry
Feeding. Feeding behavior
Female
fish oil
Fish Oils
Fundamental and applied biological sciences. Psychology
Lactation - physiology
micro-algae
microalgae
milk
Milk - chemistry
Milk - secretion
milk analysis
milk composition
ruminant nutrition
Terrestrial animal productions
Vertebrates
Vertebrates: anatomy and physiology, studies on body, several organs or systems
title Short communication: The effect of substituting fish oil in dairy cow diets with docosahexaenoic acid-micro algae on milk composition and fatty acids profile
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